Would it be worth it to build a large coaxial, say, 10'x2" barrel and 9'x4" chamber? I was looking at fittings and it wouldnt be too expensive, but then i got to thinking, im gonna need a LONG ramrod. is there anyway i could make some sort of quick disconnect behind the piston to load spuds at the valve end? threads take an awful long time to screw on and off after each firing.

Well, heres what you do. Buy a regular 2" SCH 40 tee, and buy a 4" tee with the perpendicular leg only 2". Instead of putting a female adapter and then a plug at the end of the coaxial, put the 4" x 2" x 4" tee, then the female adapter, and then the plug. On the barrel portion, put the 2" tee at the end of the barrel. Sand out the stops in 2" leg of the 4" tee, and then pass a piece of 2" pipe through the hole. It'll be tricky, but solvent weld the 2" pipe in both the 2" tee socket and the 4" perpendicular leg (which is 2" as well) socket. Slap a female adapter and plug onto the end of this 2" pipe, and there you go.

umm i see kind of. haha seems like a lot of work. i don't have access to a lot of metal supplies during the summer tho.. I was thinking about hooking up a drill to the male end.. or maybe fashioning a large wrench that fits around it. hmm any ideas on how i would go by fashioning a drill to it? I made a rough sketch of the gun, without any mods for quick loading:

0

Attachments

I'm wondering if i should use two 90s to move the sprinkler valve and fill area on top of the gun...

basically its a 1 inch coupler i bored out so it could slide it over the barrel, then i ca glues some flattened PVC sheets to it, and cut them down to size using a dremel. the PVC was flattened by cutting a piece of pipe in half, then sticking it in boiling water, then quickly pulling it from the water and flattening it between two pieces of wood. it takes a few trys to get right but its not that much work once you have the water boiling